--- title: Search in Documentation with a JavaFX LangChain4j Chat description: The post discusses using LangChain4j, a Java library, to create a chat application that integrates with existing documentation. It explains the purpose of... canonical: https://daily.dev/posts/search-in-documentation-with-a-javafx-langchain4j-chat-eagagrz98 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Search in Documentation with a JavaFX LangChain4j Chat | daily.dev og:description: The post discusses using LangChain4j, a Java library, to create a chat application that integrates with existing documentation. It explains the purpose of... og:url: https://daily.dev/posts/search-in-documentation-with-a-javafx-langchain4j-chat-eagagrz98 og:image: https://api.daily.dev/og/posts/eaGaGRz98.png og:image:alt: Search in Documentation with a JavaFX LangChain4j Chat og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Search in Documentation with a JavaFX LangChain4j Chat **[Foojay.io](https://daily.dev/sources/foojayio)** · 14 min read · 2 upvotes · 0 comments ## Summary The post discusses using LangChain4j, a Java library, to create a chat application that integrates with existing documentation. It explains the purpose of LangChain4j, provides an example application, and discusses the challenges and solutions of building a custom application for answering questions based on documentation. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#java](https://daily.dev/tags/java), [#langchain4j](https://daily.dev/tags/langchain4j) [View this post on daily.dev](https://daily.dev/posts/search-in-documentation-with-a-javafx-langchain4j-chat-eagagrz98) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Search in Documentation with a JavaFX LangChain4j Chat","url":"https://daily.dev/posts/search-in-documentation-with-a-javafx-langchain4j-chat-eagagrz98","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/search-in-documentation-with-a-javafx-langchain4j-chat-eagagrz98"},"datePublished":"2024-04-10T18:10:32.571Z","dateModified":"2026-07-09T02:13:25.625Z","description":"The post discusses using LangChain4j, a Java library, to create a chat application that integrates with existing documentation. It explains the purpose of...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/d641d67e6c12b0c7b5d11ee103e9313a?_a=AQAEufR","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/d641d67e6c12b0c7b5d11ee103e9313a?_a=AQAEufR","isAccessibleForFree":true,"articleSection":"Foojay.io","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Foojay.io","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/1820f6a6ae944760aa322b67ed85f848","url":"https://daily.dev/sources/foojayio"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/search-in-documentation-with-a-javafx-langchain4j-chat-eagagrz98","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":2},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"java,langchain4j","timeRequired":"PT14M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Foojay.io","item":"https://daily.dev/sources/foojayio"},{"@type":"ListItem","position":3,"name":"Search in Documentation with a JavaFX LangChain4j Chat"}]} ```